Factors that affect repair cost
The diagnosis
A failed capacitor is a small part. A compressor or evaporator coil is a major one.
Refrigerant type
R-22 is no longer produced in the U.S. (EPA Section 608 refrigerant rules), so recharging older systems is expensive. Newer systems use other refrigerants.
Access
Equipment in a tight attic or on a roof takes longer to work on, especially on a hot day.
Timing
After-hours and weekend calls often cost more. Heat waves bring longer waits.
Warranty status
Parts may be covered by a manufacturer warranty if the system is registered. Labor usually isn't.
System age
Older equipment can need parts that are harder to find.
Factors that affect replacement cost
- System size (tonnage) and efficiency rating (SEER2/HSPF2)
- AC only, AC plus furnace, or a heat pump
- Duct repairs, sealing or replacement
- Electrical upgrades, especially for heat pumps
- Permit and Title 24 testing (California Energy Commission building energy standards (Title 24))
- Rebates from SMUD or PG&E
How to compare quotes
- Get each quote in writing, with the equipment model numbers.
- Confirm the contractor's CSLB license on cslb.ca.gov.
- Compare warranty terms for parts and labor.
- In California, a home improvement contract over $500 must be in writing, and the down payment is limited by law. The Contractors State License Board (CSLB) explains the rules.